Proceedings of the National Conference on the Change to the International System (SI) Units for Energy, held at Church House, Westminster, London, S.W.1., 31st October and 1st November 1968 /
National Conference on the Change to the International System (SI) Units for Energy(1968 :London)
Anderton, Pamela.
Swindells, Basil.
[London :  Ministry of Technology, 
1969]